Diving in the Beagle Channel is one of the most extreme and memorable experiences in Argentine scuba diving. The waters at the end of the world are cold — between 2°C in winter and 10°C in summer — but visibility can reach 20 metres in winter when plankton retreats. A drysuit is essential or strongly recommended depending on the season. Underwater life includes crabs, king crabs (centolla), starfish, sea urchins, kelp forests and sea lions.
The most accessible site is Bahía Ensenada, ideal for introductory dives. Intermediate and advanced divers can explore Isla Redonda (walls at 27 m), Puerto Cucharita (down to 35 m) or sites like Estancia Túnel and Islas de los Puentes. The wreck of the Monte Cervantes — a 160-metre German ocean liner that sank in 1930 near the Les Eclaireurs Lighthouse — has remains accessible between 35 and 45 metres for experienced divers.
The season runs year-round; winter brings better visibility but extreme cold, while summer offers slightly warmer water but reduced visibility due to plankton. The main operator is Ushuaia Divers (Av. Além 4509, +54 2901-619782), offering Open Water and Advanced courses as well as certified diver excursions. Dives last 25-35 minutes depending on temperature and diver comfort.
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